Rupprecht, ChristophLundt, NielsWurdack, MatthiasStepanov, PetrEstrecho, EliezerRichard, MaximeOstrovskaya, ElenaHofling, SvenSchneider, Christian2023-03-052023-03-050003-6951http://hdl.handle.net/1885/286598Integrating monolayers of two-dimensional semiconductors into optical microcavities is challenging because of the very few available approaches to coat the monolayers with dielectric materials without damaging them. Some strategies have been developed, but they either rely on complicated experimental settings and expensive technologies or limit the achievable cavity quality factors. Thus, high quality Fabry-Pérot microcavities are not widely available to the community focusing on light-matter coupling in atomically thin materials. Here, we detail a recently developed technique to micro-mechanically assemble Fabry-Pérot microcavities. Our approach promotes strong coupling conditions with excitons in atomically thin materials, it does not rely on difficult or expensive technologies, it is reproducible, and it yields microcavities with quality factors approaching 4000. It is ideally suitable for engineering coupled monolayer-cavity systems of advanced complexity in small-scale laboratories.We acknowledge support from the state of Bavaria. C.S. acknowledges support from the European Research Commission (Project unLiMIt-2D, Grant No. 679288).Useful discussions with C. Anton-Solanas are acknowledged. P.S and M.R. are supported by the French National Research Agency (IDEX program ANR-15-IDEX-02, and research Grant No. ANR-16-CE30-0021). The data are available from Christian Schneider upon reasonable request.application/pdfen-AU© 2020 The authors202110.1063/5.00348512021-12-26